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http://dx.doi.org/10.9721/KJFST.2015.47.6.711

Optimization of Acetic Acid Fermentation for Producing Vinegar from Extract of Jujube (Zizyphus jujuba Mill.) Fruits  

Jo, Youngje (Department of Agricultural Biotechnology and Center for Agricultural Biomaterials, Seoul National University)
Han, Jung Woo (Department of Agricultural Biotechnology and Center for Agricultural Biomaterials, Seoul National University)
Min, Dul-Lae (Department of Agricultural Biotechnology and Center for Agricultural Biomaterials, Seoul National University)
Lee, Young Eun (Research & Development Center, Dongwon F&B)
Choi, Young-Jin (Department of Agricultural Biotechnology and Center for Agricultural Biomaterials, Seoul National University)
Lim, Seokwon (Department of Food Science and Technology & The Research Institute for Basic Sciences, Hoseo University)
Publication Information
Korean Journal of Food Science and Technology / v.47, no.6, 2015 , pp. 711-718 More about this Journal
Abstract
The optimum conditions for producing vinegar from Jujube (ziziphus jujuba) juice using Acetobacter aceti were exploited by employing the response surface methodology (RSM). In addition to the initial concentration of ethanol, which is known to be a significant factor affecting acetic acid fermentation, the effects of initial concentration of Jujube juice, A. aceti concentration, pH, and temperature on acetic acid fermentation were also investigated. Out of these factors, the effects of the initial concentration of jujube juice and inoculation amount of A. aceti were determined to be negligible based on statistical analysis. By employing the face-centered experimental design in RSM, the optimum conditions for acetic acid fermentation were exploited for achieving maximum acidity and acetic acid production. The coefficients ($R^2$) of the derived equations from the response surface regression were 0.71 and 0.78 for acidity and acetic acid production, respectively. The maximum production of acetic acid was expected to be 52.76 mg/mL from 25% jujube extract at $21.75^{\circ}C$ with 7.69% alcohol content.
Keywords
jujube; optimization; acetic acid; fermentation; response surface methodology;
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Times Cited By KSCI : 3  (Citation Analysis)
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